Aerobic microbes - Study guides, Class notes & Summaries

Final exam Straighter line microbiology 100% SOLUTION 2023//2024 In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? - ANSWER Nitrogen Fixation If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OHconcentration of the solution? - ANSWER 10-8 M Fungi are able to reproduce asexually by creating conidiospores and spo...

BI 234 MIDTERM 2 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS GRADED A++ 1% What % of microbes can be grown in pure culture? There is so much that we don't know about because it is impossible to grow and observe the majority of these organisms. Why is it significant for microbiologists to recognize the % above? Melts at 95℃ and solidifies at 45 ℃ What is the melting temperature and solidifying temperature of agar? It provides nutrients for them. Why is agar especially suit...

CMMB 343 lab Exam with 100% Correct Answers | Verified | Latest 2024 Version How to do BHI stant How to interpret results? Slanted BHI agar in a test tube Inoculate with the sample Will see growth on surface of agar if aerobic microbe. Fissures and cracks below surface if able to ferment. Deep shake culture Innoculate a loop of sample in molten agar and rotate in hands to mix. If fissures below the surface, can ferment. If no fissures, cannot ferment. Thioglycollate Medium Pipette som...

Which major body sites are heavily colonized by microbes? Are you born with these microbes? correct answers Exposed skin, oral cavity, and gastrointestinal tract are heavily colonized by microbes. Humans are not born with any microbes, colonization begins at birth via exposure. What are the common genera of bacteria found on the skin, in the throat, and in the intestines? correct answers The common bacteria found on the skin: Staphylococcus, Propionibacterium, and Corynebacterium. The comm...

WGU D311 Microbiology 2024 study for OA Verified A+ Explain the primary role of microbes in the environment. ️️ Microbes play a critical role in decomposing organic matter, cycling nutrients, and supporting ecosystems by maintaining soil health and promoting plant growth. Define the term "pathogen." ️️ A pathogen is a microorganism that causes disease in its host, which can be an animal, plant, or human. What is the function of an endospore in bacteria? ️️ An en...

Chain of Infection - Answer- 1)Infectious agent= organism with ability to cause disease; greater virulence, invasiveness, and pathogenicity => increased odds of infection 2) Reservoir: place where microbes can persist and reproduce 3) Portal of Exit: way for microbe to leave the reservoir 4) Mode of transmission: method of microbe transfer from one place to another 5) Portal of entry: opening that allows microbe to enter host 6) Susceptible host: Lacks immunity or physical resistance to ...

MICROBIOLOGY EXAM 1 CHAPTERS 1-7 WITH COMPLETE SOLUTIONS 100% • What organisms are considered microorganisms and are the subjects of study in microbiology? - correct answer Microorganisms are Prokaryotes(bacteria & archaea) and eukaryotes(protozoa, algae, some fungi and helminths). Microbiology also includes studying viruses . Which two are encompassed by the term prokaryotes? - correct answer bacteria and archaea What are some examples of "small" things that are not covered by micr...

CHAPTER 3—ECOSYSTEMS: WHAT ARE THEY AND HOW DO THEY WORK? MULTIPLE CHOICE 1. Scientists estimate that tropical rain forests contain up to half of the earth’s land plants and animal species. What percentage of the world’s land surface do tropical rain forests cover? a. 2 b. 4 c. 8 d. 10 e. 12 ANS: A PTS: 1 TOP: 3-0 Core Case Study: Tropical Rain Forests Are Disappearing KEY: Bloom's: Remember NOT: New 2. The disappearance of the tropical rain forests is an import...

Chain of Infection - Answer-1)Infectious agent= organism with ability to cause disease; greater virulence, invasiveness, and pathogenicity => increased odds of infection 2) Reservoir: place where microbes can persist and reproduce 3) Portal of Exit: way for microbe to leave the reservoir 4) Mode of transmission: method of microbe transfer from one place to another 5) Portal of entry: opening that allows microbe to enter host 6) Susceptible host: Lacks immunity or physical resistance to p...

What is microbial growth? - increase in the number of cells What are the two general requirements for microbial growth? - physical: temperature, pH, osmotic pressure chemical: types of nutrients, growth factors A bacterium has just encountered a new environment. What are its three basic choices with respect to growth in this new environment? - Adapt- allows growth to continue Tolerate- survive without growth DIE What are a bacterium's cardinal temperatures? Do all bacteria have the same...